[SUR 10,165] Computation of areas33 

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(1) Areas of parcels of land must be entirely mathematically computed except where the area is bounded by irregular lines, or a large number of sides in which case a planimeter may be used to obtain the areas of small parts if at least 80 per cent of the total area of a parcel is computed mathematically.

(2) All final areas are to be unadjusted areas and shown as such on the plan.

(3) Areas of parcels—

• (a)less than one hectare (or 10,000 m²), must be shown in square metres (m²) and decimal fractions of a square metre resulting from the computation of an area, must not be shown, but in all cases areas must be rounded down; and
• (b)larger than one hectare (or 10,000 m²), must be shown in hectares (ha), normally to 4 decimal places of a hectare, although for computation purposes a tolerance of ±1 part in 1000 will be acceptable, and areas may be rounded down within this tolerance.

(4) After accurately computing the exact areas in subregulations (1) and (2), modifications with regard to fractional quantities, as specified hereunder, must be made—

• (a)in portions not exceeding 4 hectares; if bounded partially by natural features, record to the nearest 0.0025 hectare;
• (b)in portions from 4 hectares but not exceeding 40 hectares; if bounded partially by natural features, record to the nearest 0.05 hectare;
• (c)in portions from 40 hectares but not exceeding 200 hectares, if bounded partially by natural features, record to the nearest 0.1 hectare; and
• (d)in portions exceeding 200 hectares; if bounded partially by natural features record to the nearest 0.25 hectare.